On December 31, 2012, there was a solar eruption that extended about 160,000 miles out from the Sun. Magnetic forces were behind the plasma flow, but the Sun's gravity pulled much of the plasma back into the star.
Here's some mind-blowing perspective, from NASA:
The length of the eruption extends about 160,000 miles out from the Sun. With Earth about 7,900 miles in diameter, this relatively minor eruption is about 20 times the diameter of our planet.
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